Having difficulty copying and pasting.

I'm trying to copy text from websites but keep running into the same problem, which is hitting and paste, and ending up with a space and no text.

I have tried highlighting the text and then used shortcuts (Command + C and Command + V) as well as double-clicking my touchpad to get the drop down menu to appear to select copy and paste there, but to no avail.

This is not something that has always happened with this Macbook Pro, so what could be the problem?

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